Make code clearer by matching _accept condition

Author: radarhere

src/PIL/WmfImagePlugin.py

@@ -21,7 +21,6 @@
 
 from . import Image, ImageFile
 from ._binary import i16le as word
-from ._binary import i32le as dword
 from ._binary import si16le as short
 from ._binary import si32le as _long
 
@@ -112,7 +111,7 @@ def _open(self):
             if s[22:26] != b"\x01\x00\t\x00":
                 raise SyntaxError("Unsupported WMF file format")
 
-        elif dword(s) == 1 and s[40:44] == b" EMF":
+        elif s[:4] == b"\x01\x00\x00\x00" and s[40:44] == b" EMF":
             # enhanced metafile
 
             # get bounding box